Ground distribution circuit for GMC Cab & Chassis Sierra 3500 HD (2008-2012)

4.8L, 5.3L, 6.0L, 6.2L AUXILIARY BATTERY RELAY (IF EQUIPPED) AUXILIARY BATTERY RUN RELAY (IF IGNITION EQUIPPED) IGNITION COIL COIL BATTERY CURRENT SENSOR (GASOLINE) BLK WIRE CHEVROLET CHMSL BCK/UP PCB LAMP STRTR CRNK RELAY PCB RELAY RELAY RELAY COOLING FAN DIODE 1 (W/ 10 SERIES) FRONT WASHER DIODE DIESEL DIESEL W/ AUXILIARY W/ DUAL BATTERY BATTERY ENGINE COOLING FAN (DIESEL) EXCEPT HYBRID EXCEPT HYBRID, W/ 10 SERIES FROM GROUND FRONT DRIVE TRANSFER AXLE CASE SHIFT ACTUATOR CONTROL MODULE GMC GMC/ CHEVROLET GRY WIRE HOOD AJAR SWITCH IGNITION IGNITION COIL COIL LEFT BATTERY LEFT ENGINE COOLING FAN RESISTOR LEFT FRONT SIDE MARKER LAMP LEFT UPPER LEFT HIGH BEAM PARK/TURN HEADLAMP SIGNAL LAMP LOWER LEFT PARK/TURN SIGNAL LAMP LOWER RIGHT PARK/TURN SIGNAL LAMP LT BLU WIRE NCA WIRE REAR DEFOG RELAY RIGHT BATTERY RIGHT FRONT SIDE MARKER LAMP RIGHT HIGH BEAM HEADLAMP RIGHT LOW BEAM HEADLAMP RUN/ TO AUXILIARY FUSE BLOCK (DIAGRAM 2 OF 6) UPPER LEFT PARK/TURN SIGNAL LAMP UPPER RIGHT PARK/TURN SIGNAL LAMP W/ KEYLESS ENTRY, PTO W/ PTO WHT WIRE WINDSHIELD WASHER FLUID LEFT LEVEL HORN SWITCH WINDSHIELD WIPER MOTOR WIPER CONTROL PCB RELAY

4.3L 6 SPEED A/T ALLISON TRANSMISSION 6 SPEED A/T AUTOMATIC TRANSMISSION AUTOMATIC TRANSMISSION AUXILIARY FLUID PUMP CONTROL MODULE BARE BARE BARE BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE BODY CONTROL MODULE (BCM) DIESEL ENGINE CONTROL MODULE ENGINE CONTROL MODULE (ECM) ENGINE COOLANT LEVEL SWITCH EXCEPT 4.3L 4.3L EXCEPT DIESEL EXCEPT HYBRID EXHAUST GAS RECIRCULATION (EGR) VALVE SHIELD FAN HIGH RELAY RIGHT ENGINE COOLING FAN RESISTOR FROM FROM FRONT DOME/ READING LAMPS FUEL PRESSURE REGULATOR 1 SHIELD FUEL PRESSURE REGULATOR 2 SHIELD FUEL PRESSURE REGULATOR 2 SHIELD FUEL PRESSURE REGULATOR 1 SHIELD FUSE FUSE GLOW PLUG CONTROL MODULE (GPCM) GLOW PLUG FUEL FILTER CONTROL PRESSURE MODULE SWITCH (GPCM) GRY WIRE HYBRID PROPULSION IGNITION CONTROL MODULE (ICM) INTAKE AIR VALVE SHIELD EXHAUST GAS RECIRCULATION COOLER BYPASS SOLENOID VALVE MASS AIR FLOW (MAF)/ INTAKE AIR TEMPERATURE (IAT) SENSORS MOBILE RADIO FUSE BLOCK (BEHIND RIGHT SIDE OF DASH) NCA WIRE PARK/ NEUTRAL POSITION SWITCH RELAY RELAY RIGHT ENGINE COOLING FAN ROOF ROOF BEACON BEACON RELAY SWITCH SHIELD BARE BARE SPEED A/T TO RIGHT FROM BATTERY (DIAGRAM (DIAGRAM 1 OF 6) 1 OF 6) TRANSMISSION CONTROL MODULE (TCM) W/ HYBRID PROPULSION W/ ROOF MOUNTED LAMP W/ WRECKER EMERGENCY LAMP, BODY BUILDER EMERGENCY LAMP, ROOF MOUNTED LAMP WATER IN-FUEL SENSOR WHT WIRE

ACCESSORY DC POWER CONTROL MODULE AUTOMATIC A/C MANUAL A/C 15 10 BARE BLK WIRE BLOWER MOTOR CONTROL MODULE BREAKOUT) CENTER CONSOLE ACCESSORY POWER OUTLET CENTER CONSOLE COMPARTMENT ACCESSORY POWER OUTLET CENTER HIGH MOUNTED STOP LAMP (CHMSL) DRIVER INFORMATION CENTER (DIC) SWITCH ELECTRONIC ADJUSTABLE PEDALS PCB RELAY ELECTRONIC COMPASS MODULE EXTENDED CAB/CREW CAB FROM HORN SWITCH HVAC CONTROL MODULE INSIDE REARVIEW MIRROR (ISRVM) LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LEFT STEERING WHEEL CONTROL SWITCH MIDDLE LEFT FRONT ROOF FRONT CLEARANCE OUTER LAMP ROOF CLEARANCE LAMP NCA WIRE PARK ENABLE PCB RELAY PASSENGER OUTSIDE REAR VIEW MIRROR PASSENGER WINDOW SWITCH PASSENGER DOOR LOCK/ WINDOW SWITCH REAR DOME READING LAMPS RIGHT FRONT OUTER ROOF CLEARANCE LAMP RIGHT I/P JUNCTION BLOCK (IN RIGHT END OF DASH) RIGHT STEERING WHEEL CONTROL SWITCH RIGHT SUNSHADE (IF EQUIPPED) SUNROOF MODULE SUNROOF SWITCH TO SPLICE W/ ACCESSORY STEERING CONTROL W/ ACCESSORY STEERING CONTROL, W/ ODOMETER SECURITY WIRING PROVISIONS W/ BODY BUILDER EMERGENCY LAMP W/ COMFORT, DECOR LEVEL 3 W/ LUXURY EDITION W/ MANUAL FOLDING MIRROR, HEATED MIRROR W/ MANUAL FOLDING MIRROR, HEATED MIRROR (IN RIGHT FRONT DOOR HARNESS) W/ ROOF MARKER LAMP W/ ROOF MOUNTED LAMP PROVISIONS W/ STEERING WHEEL HEATER, ACCESSORY STEERING CONTROL, AUTOMATIC CRUISE CONTROL W/ STEERING WHEEL HEATER, AUTOMATIC CRUISE CONTROL W/ SUNROOF MOUNTED/SLIDING LAMP PROVISION W/ SUNROOF MOUNTED/SLIDING LAMP PROVISION W/O ROOF MARKER LAMP W/ SUNROOF SLIDING W/ WRECKER EMERGENCY LAMP W/O STEERING WHEEL HEATER W/O STEERING WHEEL HEATER, ACCESSORY STEERING CONTROL, AUTOMATIC CRUISE CONTROL WHT WIRE

AMBIENT LIGHT SENSOR AMBIENT LIGHT/ SUNLOAD SENSOR AUTOMATIC A/C AUTOMATIC A/C MANUAL A/C 8 3 AUTOMATIC TRANSMISSION SHIFT LEVER BLK WIRE BLK/WHT WIRE BODY CONTROL MODULE (BCM) BRAKE FLUID LEVEL SWITCH DATA LINK CONNECTOR DRIVER DOOR LATCH DRIVER DOOR LOCK/ WINDOW SWITCH DRIVER DRIVER DOOR DOOR LOCK LATCH SWITCH DRIVER SEAT BACK VENTILATION HEATING, COOLING MODULE DRIVER SEAT CUSHION VENTILATION HEATING, COOLING MODULE DRIVER WINDOW SWITCH EXCEPT HYBRID FRONT DOOR LOCK DIODE FRONT DOOR UNLOCK DIODE HEADLAMP, PANEL I/P DIMMER MULTI-FUNCTION SWITCH SWITCH HVAC CONTROL MODULE HYBRID, W/O NON BUCKET FRONT INDIVIDUAL SEAT INSTRUMENT PANEL CLUSTER (IPC) LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) MANUAL A/C NCA WIRE PASSENGER DOOR LATCH PASSENGER DOOR LOCK SWITCH PASSENGER SEAT ADJUSTER SWITCH PASSENGER SEAT BACK VENTILATION HEATING, COOLING MODULE PASSENGER SEAT CUSHION VENTILATION HEATING, COOLING MODULE PASSENGER SEAT LUMBAR SWITCH POWER WINDOW REAR DOOR LOCK DIODE REAR DOOR UNLOCK DIODE RIGHT I/P JUNCTION BLOCK (IN RIGHT END OF DASH) THEFT DETERRENT MODULE TURN SIGNAL/ MULTI-FUNCTION SWITCH W/ FRONT HEATED/ COOLING SEATS W/ NON BUCKET FRONT INDIVIDUAL SEAT W/O W/O NON BUCKET, FRONT INDIVIDUAL SEAT, W/ COMFORT, DECOR LEVEL 3 W/O POWER DOOR LOCK CONTROL W/O POWER W/ POWER DOOR LOCK DOOR LOCK CONTROL CONTROL WHT WIRE WINDSHIELD WIPER (HYBRID) MOTOR A/C COMPRESSOR

4.3L BACKUP ALARM BLK WIRE CHEVROLET CHIME MODULE DIESEL DIESEL, W/ 31 SERIES, W/O REAR AUXILIARY FUEL TANK DIGITAL VIDEO DISC (DVD) CONTROL MODULE DRIVER HEATED SEAT SWITCH ELECTRONIC BRAKE CONTROL MODULE (EBCM) EXCEPT 4.3L, 6.0L (VING) FROM PARK ENABLE PCB RELAY LEFT I/P JUNCTION BLOCK (DIAGRAM 3 OF 6) FRONT FUEL PUMP, SENDER ASSEMBLY FUEL PUMP FUEL PUMP/ FUEL PUMP TRAILER BRAKE FLOW CONTROL CONTROL MODULE MODULE GAS GMC GRD HEATED SEAT CONTROL MODULE HEATED SEAT SWITCH INFRARED TRANSMITTER LEFT I/P JUNCTION BLOCK (LOWER LEFT SIDE OF DASH) LOWER RIGHT TAIL/ STOP, TURN SIGNAL LAMP NCA WIRE PASSENGER RADIO REAR FUEL PUMP, SENDER ASSEMBLY REAR LAMPS JUNCTION BLOCK (INSIDE OF LEFT REAR FRAME RAIL) RIGHT BACKUP LAMP RIGHT RIGHT REAR BACKUP SIDE MARKER LAMP LAMP SECONDARY FUEL PUMP RELAY TRAILER CONNECTOR UPPER RIGHT TAIL/ STOP, TURN SIGNAL LAMP VIDEO DISPLAY W/ ACTIVE BRAKE, W/O 10 SERIES W/ CAMPER, W/ CAMPER, W/O CAMPER, TRAILER, BACKUP TRAILER, BACKUP ALARM ALARM W/ DUAL FRONT DOOR MOUNTED, 4 SPEAKER SYSTEM W/ LUXURY EDITION W/O LUXURY EDITION, W/ REAR SEAT ENTERTAINMENT PACKAGE W/ LUXURY EDITION, REAR SEAT ENTERTAINMENT PACKAGE W/ PERFORMANCE ENHANCED AUDIO W/ REAR AUXILIARY FUEL TANK W/ SPO DVD W/ SPO HEATED SEATS W/O CAMPER, W/O LUXURY EDITION W/O PERFORMANCE ENHANCED AUDIO W/O RADIO W/O REAR AUXILIARY 6.0L (VIN G) FUEL TANK W/O REAR AUXILIARY FUEL TANK 6.0L (VIN G) W/O REAR SEAT RADIO, LUXURY EDITION W/O W/ INTEGRATED INTEGRATED TRAILER TRAILER BRAKE BRAKE WHT WIRE

BLK WIRE BLK/WHT WIRE CENTER CENTER SEAT CONSOLE ACCESSORY ACCESSORY POWER POWER OUTLET OUTLET CONSOLE COMPARTMENT ACCESSORY POWER OUTLET CREW CAB CREW CAB EXTENDED CAB CREW CAB/ EXTENDED CAB W/ PERFORMANCE ENHANCED AUDIO, FRONT COMPARTMENT CONSOLE DRIVE MOTOR BATTERY NEGATIVE HIGH VOLTAGE CONTACTOR RELAY DRIVER GENERATOR MOTOR BATTERY GENERATOR VENT FAN BATTERY DRIVER MOTOR GENERATOR BATTERY CONTROL MODULE DRIVER SEAT ADJUSTER W/ MULTI- SWITCH DIRECTIONAL PASSENGER POWER SEAT ADJUSTER EXCEPT CREW CAB EXCEPT HYBRID HYBRID EXCEPT REGULAR CAB EXTENDED CAB FROM FRONT PASSENGER/CHILD PRESENCE DETECTOR GMC GRD GRD GRD HYBRID EXCEPT HYBRID FROM FROM HYBRID W/ NON BUCKET FRONT INDIVIDUAL SEAT INFLATABLE RESTRAINT PASSENGER PRESENCE SYSTEM (PPS) MODULE INFLATABLE RESTRAINT SENSING, DIAGNOSTIC MODULE (SDM) LEFT FRONT REAR FENDER CLEARANCE LAMP LEFT LEFT REAR SIDE BACKUP MARKER LAMP LAMP LEFT LICENSE LAMP LEFT REAR LEFT REAR WINDOW DOOR LATCH SWITCH LEFT REAR RIGHT FRONT MOST FENDER REAR FENDER CLEARANCE CLEARANCE LAMP LAMP LOWER LEFT LEFT TAIL/ BACKUP STOP, TURN LAMP SIGNAL LAMP LOWER LEFT UPPER LEFT TAIL/ TAIL/ STOP, TURN STOP, TURN SIGNAL LAMP SIGNAL LAMP MEMORY SEAT MODULE (MSM) NCA WIRE PASSENGER SEAT BELT BUCKLE REAR LAMPS JUNCTION BLOCK (INSIDE OF LEFT REAR FRAME RAIL) REAR OBJECT SENSOR CONTROL MODULE REAR WINDOW DEFOGGER GRID RED WIRE RIGHT LICENSE LAMP RIGHT REAR DOOR LATCH RIGHT REAR MOST FENDER CLEARANCE TAILGATE MARKER LAMP LAMP RIGHT REAR WINDOW SWITCH TO DRIVER MOTOR GENERATOR TO GROUND BATTERY (DIAGRAM (DIAGRAM 6 OF 6) 6 OF 6) TRAILER BRAKE CONTROL RELAY TRAILER BRAKE CONTROL MODULE UPPER LEFT TAIL/ STOP, TURN SIGNAL LAMP W/ FULL FEATURE CENTER SEAT W/ NON BUCKET FRONT INDIVIDUAL SEAT W/ POWER WINDOWS, FULL FEATURE CENTER SEAT W/ REAR DEFOGGER W/ REAR DUAL WHEEL W/ TRAILER 6.6L, 6.0L (VIN G) BRAKE W/ACTIVE BRAKE W/O ACTIVE BRAKE W/O MULTI- DIRECTIONAL PASSENGER POWER SEAT ADJUSTER W/O NON BUCKET FRONT INDIVIDUAL SEAT W/O POWER WINDOWS, FULL FEATURE CENTER SEAT W/O REAR DEFOGGER W/O REAR PARKING ASSIST, LOW TIRE PRESSURE, REMOTE ENTRY W/O TRAILER BRAKE WHT WIRE YEL WIRE